I do this a lot as well.
The two other use cases you mention aren’t common at all though.
[Edit: I was using a blocker that was blocking it. Now I've used it and can tell it's working, and I still don't notice any problems using it in Safari.]
> Safari 13.0 has support for <link rel="prefetch"> but it’s disabled by default. Hopefully it will be enabled in September 2020 in Safari 14.0.
Try enabling that setting or using another browser (I used Firefox) to see the effect it has.
If it happens on all sites at the same time it’s one thing. If it happens on just your site I will just feel like your site is icky (and I might not even know why).
based on which data? Drag-dropping links to other applications is quite useful.
We'll, lets hope most users of this do indeed load it from your domain, so my scriptblocker will stop it.